7028113009 has 4 divisors (see below), whose sum is σ = 7092591220. Its totient is φ = 6963634800.

The previous prime is 7028112989. The next prime is 7028113061. The reversal of 7028113009 is 9003118207.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2000593984 + 5027519025 = 44728^2 + 70905^2 .

It is a cyclic number.

It is not a de Polignac number, because 7028113009 - 2⁷ = 7028112881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7028113069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32238942 + ... + 32239159.

It is an arithmetic number, because the mean of its divisors is an integer number (1773147805).

Almost surely, 2^7028113009 is an apocalyptic number.

It is an amenable number.

7028113009 is a deficient number, since it is larger than the sum of its proper divisors (64478211).

7028113009 is a wasteful number, since it uses less digits than its factorization.

7028113009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64478210.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7028113009 is about 83833.8416691016. The cubic root of 7028113009 is about 1915.4886312497.

The spelling of 7028113009 in words is "seven billion, twenty-eight million, one hundred thirteen thousand, nine".